Chrysanthemum plant named ‘Zanmubonimp’

ABSTRACT

A new and distinct  chrysanthemum  plant named ‘Zanmubonimp’ is disclosed, it is characterized by its medium sized, double type blooms with white color ray florets and response time of 7 weeks. The new plant is normally used for commercial cut flower production.

BACKGROUND OF THE INVENTION

Botanical designation: Chrysanthemum×morifolium Ramat.

Cultivar denomination: ‘Zanmubonimp’.

RELATED CULTIVARS

‘Zanmubonimp’ is a mutant plant of ‘Zanmubonita’ (unpatented).

BACKGROUND OF THE INVENTION

The present invention comprises a new and distinct cultivar of chrysanthemum, botanically known as Chrysanthemum×morifolium, and referred to by the denomination ‘Zanmubonimp’. ‘Zanmubonimp’ is a product of a breeding and selection program to produce new chrysanthemum cultivars for cut flower commercial applications. The new plant cultivar is a naturally occurring whole plant mutant of a parent chrysanthemum named ‘Zanmubonita’ (unpatented). A comparison with the parent plant is made in the section ‘description of the invention’. The new cultivar was discovered as a whole plant mutation in June 2015 by Henricus Jacobus Maria Jacobs in a controlled environment (greenhouse) in Valkenburg Z-H, The Netherlands. The first act of asexual reproduction of ‘Zanmubonimp’ was accomplished when vegetative cuttings were taken from the initial selection and propagated further in Valkenburg Z-H, The Netherlands.

SUMMARY OF THE INVENTION

The present invention is a new and distinct variety of a cut type chrysanthemum bearing medium sized double type blooms with white ray-florets and a response time of seven weeks.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention of a new and distinct variety of chrysanthemum (of about 10 weeks) is shown in the accompanying drawings, the color being as nearly true as possible with color photographs of this type.

FIG. 1 shows a plant of the cultivar in full bloom.

FIG. 2 shows the various stages of bloom of the new cultivar.

FIG. 3 shows the foliage of the new cultivar.

DESCRIPTION OF THE INVENTION

The observations and measurements were gathered from plants grown in August 2016 to March 2017 in a greenhouse in Valkenburg Z-H, the Netherlands in a photo-periodic controlled crop under conditions generally used in commercial practice. The greenhouse temperatures during this crop were at day-time between 18° C. and 25° C. and at night 20° C. After a long day period of 14 days the photo-periodic response time in this crop was 49 days. After the long day period to flowering growth retardants (Alar) were applied 2 to 3 times in an average dose of 2.5 gram/liter water. No tests were done on disease or insect resistance or susceptibility. No tests were done on cold or drought resistance. This new variety of chrysanthemum has been found to retain its distinctive characteristics throughout successive propagations however the phenotype may vary significantly with variations in environment such as light intensity and temperature.

From the cultivars known to inventor the most similar existing cultivar in comparison to ‘Zanmubonimp’ is its parent plant ‘Zanmubonita’. When ‘Zanmubonita’ and ‘Zanmubonimp’ are being compared the following differences and similarities are noticed (1) Stem weight. And (2) Plant height. (1). Stems of ‘Zanmubonimp’ are heavier than those of ‘Zanmubonita’. (2) Plants of ‘Zanmubonimp’ are taller than those of ‘Zanmubonita’.

The following is a description of the plant and characteristics that distinguish ‘Zanmubonimp’ as a new and distinct variety.

The color designations are taken from the plant itself. Accordingly, any discrepancies between the color designations and the colors depicted in the photographs are due to photographic tolerances. The color chart used in this description is: The Royal Horticultural Society Colour Chart, sixth edition, 2015.

TABLE 1 Botanical Description of Chrysanthemum x morifolium Ramat. ‘Zanmubonimp’ Bud Size: Medium; cross-section 8 mm, height 7 mm Shape: Round Texture: Pubescent Outside color: Greyed-green 191A Phyllaries Number: 24, arranged in 3 rows Shape: Elliptic Apex: Acute Base: Truncate Margin: Entire Color: Upper side: Green 136A Under side: Green 137A Length and width: 10 mm; 3.5 mm Texture: Pubescent Inflorescences Spray Form: Cylindrical Inflorescence Type: Double Inflorescence Height: 2 cm Inflorescence Diameter: 7-8 cm Peduncle length: 10-17 cm Peduncle color: Green 138A Peduncle diameter: 2 mm Peduncle texture: Pubescent Number per branch: Approx. 16-17 inflorescences Seeds: Not observed. Fragrance: Faint chrysanthemum odor Color inflorescences Center of inflorescence: Immature stage: Yellow- green 143C; Mature stage: Yellow-green 144C Color of upper side of ray florets (outer rows): White NN155D Color of lower side of ray florets (outer rows): White NN155D Color of upper side ray florets (inner rows): Yellow-green 150D Color of lower side ray florets (inner rows): Yellow-green 150D Tonality from distance: A cut mum with white blooms and a green center Color of ray florets after aging of the plant: White NN155D Ray florets Type: Ligulate Texture: Upper and under side smooth Number: 100-110 Shape: Elliptic Apex: Rounded Base: Acute Cross-section: Weakly concave Longitudinal axis: Straight Length of corolla tube: 2 mm Ray floret margin: Entire Ray floret length: 1.8-4 cm Ray floret width (outer row): 4-12 mm Ratio length/width: Medium Disc florets Disc diameter: 1 mm Distribution of disc florets: Very few, only visible in mature stage of inflorescence Shape: Tubular Color: Yellow-green 145C at base to Green Yellow 143C at apex Length: 4 mm Diameter: 0.5 mm Receptacle Color: Yellow-green 145D Shape: Domed ised Height: 5 mm Diameter: 6 mm Reproductive Organs Androecium: Present on only disc florets Stamen length: 3 mm Stamen color: Yellow-green 144A Anther color: Yellow 2A Pollen: Not observed Gynoecium: Present on both ray and disc florets Style color: Yellow-green 154C Style length: 4 mm Stigma color: Yellow 7A Stigma width: 1 mm Ovary: Enclosed in calyx Plant Growth habit: Upright Growth rate: Medium Height: 105-115 cm Width: 25 cm Stem weight: 65-85 grams Stem color: Green 138B Stem texture: Smooth, slightly pubescent Stem diameter: 6-7 mm Stem anthocyanin coloration: absent Internode length: 1.8-2 cm Response time: 49 days Roots: Short, fibrous Foliage Glossiness: Weakly Leaf color: Upper side: Green 136A; Under side: Green 137C Color midvein: Upper side: Yellow-green 147D; Under side: Yellow-green 148D Size: Medium; length 10-12 cm, width 4.5-6.5 cm Quantity per stem: 26-30 Shape: Elliptic Texture upper side: Sparsely pubescent Texture under side: Pubescent Venation arrangement: Pinnate Shape of margin: Serrated Shape of base of sinus between lateral lobes: Rounded Margin of sinus between lateral lobes: Diverging Shape of base: Attenuate to Truncate Apex: Pointed Petiole length: 2 cm Petiole diameter: 2.5-3 mm Petiole attitude: Moderately upwards Petiole color: Yellow-green 147D Stipules: Small

TABLE 2 Differences with the comparison variety, when grown under identical conditions ‘Zanmubonimp’ ‘Zamubonita’ Stem weight 65-85 grams 60-80 grams Plant height 105-115 cm 100-110 cm 

I claim:
 1. A new and distinct chrysanthemum plant named ‘Zanmubonimp’ as described and illustrated. 